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carstenraddatz<a href="https://mastodon.social/@coreyspowell" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@coreyspowell</a> One last thing: the incoming <a href="https://mastodon.social/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> nova might be a type Ia event. It sits 2500 light years from here and will present as a new "guest star" or might even cast a second shadow during the day if the Chandrasekar limit is hit. I guess you especially will enjoy those few days of sky gazing.

Daniel FischerWhile the spectrum of <a href="https://scicomm.xyz/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> is currently acting up - <a href="https://skyweek.wordpress.com/2025/02/16/allgemeines-live-blog-ab-dem-16-februar-2025/#Feb16" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://skyweek.wordpress.com/2025/02/16/allgemeines-live-blog-ab-dem-16-februar-2025/#Feb16</a> - this probably does *not* mean that the next big eruption of the recurrent nova is imminent: <a href="https://forums.aavso.org/t/observing-campaigns-875-monitoring-t-crb/946/60" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://forums.aavso.org/t/observing-campaigns-875-monitoring-t-crb/946/60</a> and <a href="https://www.facebook.com/david.iadevaia/posts/pfbid026ZgWvaFhPjkcfX2EtCgfvRAVR7p6wqgZ3SA5QmiX1W2eua22zDYTTHFzpbNpC87Zl" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.facebook.com/david.iadevaia/posts/pfbid026ZgWvaFhPjkcfX2EtCgfvRAVR7p6wqgZ3SA5QmiX1W2eua22zDYTTHFzpbNpC87Zl</a>

Daniel FischerA funny way to 'monitor' <a href="https://scicomm.xyz/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a>: the view of Cam 2 of the <a href="https://scicomm.xyz/tags/AllSky7" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AllSky7</a> system <a href="https://allsky7.net/index.html?&station=AMS216#liveview" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://allsky7.net/index.html?&station=AMS216#liveview</a> on the roof of a school in <a href="https://scicomm.xyz/tags/Bochum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Bochum</a>, Germany - the limiting magnitude is a bit better than 2 (in the currently moonlit sky), so if the star blows and reaches 2 mag. it would actually show up as another point of light similar and close to Gemma.

Dr. John Barentine FRAS<a href="https://mastodon.social/@smorrell" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@smorrell</a> <a href="https://fediscience.org/@skyglowberlin" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@skyglowberlin</a> <a href="https://astrodon.social/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> <a href="https://astrodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a>

Dr. Miguel Montargès 🔭✨📡Les raies d'émission dans le spectre de <a href="https://mastodon.obspm.fr/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> sont de plus en plus marquées, indiquant une augmentation de l'accretion dans le disque qui entoure la naine blanche. Bientôt le grand soir ? Peut-être...Actuellement invisible à l'oeil, cette étoile le deviendra mais restera faible lors de la nova.

Dr Sam Morrell<a href="https://fediscience.org/@skyglowberlin" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@skyglowberlin</a> I’ve had my eye on <a href="https://mastodon.social/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> since last year. Exciting to see some reported changes in the spectral signatures of accretion. Looking forward to the eruption. Fingers crossed for clear skies for all.

Christopher Kyba 🇨🇦🇪🇺TCrB, TCrB, TCrB!Too bad it's cloudy...<a href="https://fediscience.org/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://fediscience.org/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a>

Planetarium BochumTautenburger Astronomen melden "signifikante Änderungen im Spektrum von <a href="https://mastodon.social/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a>. Die Emissionslinien im Spektrum sind sprunghaft angestiegen, was auf eine stark erhöhte Akkretionsrate hindeutet. Des Weiteren sind nun Emissionslinien zu sehen, die nur bei einer Temperatur von mindestens 40000 K entstehen können. [...] Dies könnten erste Anzeichen sein, dass die Nova in Kürze ausbrechen wird": <a href="https://www.tls-tautenburg.de/de/news/tautenburger-wissenschaftler-beobachten-auffaellige-veraenderung-im-spektrum-der-wiederkehrenden-nova-t-crb-und-bleiben-wachsam" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.tls-tautenburg.de/de/news/tautenburger-wissenschaftler-beobachten-auffaellige-veraenderung-im-spektrum-der-wiederkehrenden-nova-t-crb-und-bleiben-wachsam</a> -> <a href="https://www.facebook.com/Cunolanghaar/posts/pfbid02SyQfQMGUdbYwiZim6ZETGu3Lhhcs9d7BvfYHkmwpdPoiRrHpw6tW7kxK7Pnv111El" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.facebook.com/Cunolanghaar/posts/pfbid02SyQfQMGUdbYwiZim6ZETGu3Lhhcs9d7BvfYHkmwpdPoiRrHpw6tW7kxK7Pnv111El</a> und <a href="https://www.astronomerstelegram.org/?read=17030" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.astronomerstelegram.org/?read=17030</a>

Daniel FischerPre-Outburst Observations of <a href="https://scicomm.xyz/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> with a Smart Telescope: <a href="https://iopscience.iop.org/article/10.3847/2515-5172/ad9fea" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://iopscience.iop.org/article/10.3847/2515-5172/ad9fea</a> -> "From 2024 April 2 to November 7, we obtained, through two Seestar S50 smart-telescopes, 8060 unfiltered photometric points. It was thus possible to calculate the orbital period of the binary system found to be 226.1 ± 3.8 days, lower than the officially recognized 227.5687 ± 0.0099 days but within the error bar. No outbursts were observed during this observation period."

Christopher KybaTurns out I can still catch <a href="https://vis.social/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> from the attic in the early evening! <a href="https://vis.social/tags/CitizenScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CitizenScience</a> <a href="https://vis.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://vis.social/tags/eVscope" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#eVscope</a> <a href="https://vis.social/tags/CitizenAstronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CitizenAstronomy</a>

RaphAstronomeIl y a de nouvelles observations : c'est effectivement une fausse alerte. La magnitude est toujours aux alentours de 10 donc toujours pas de <a href="https://mamot.fr/tags/nova" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#nova</a>.<a href="https://mamot.fr/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> <a href="https://mamot.fr/tags/astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomie</a>

RaphAstronomeLe site <a href="https://spaceweather.com/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://spaceweather.com/</a> indique que la nova T CrB à actuellement une magnitude de 5,9. Cela pourrait vouloir dire que l'étoile commence une éruption. Le site de l'AAVSO montre toutefois que ce chiffre est basé sur une seule observation et en visuel donc le risque de fausse alerte est important. Les précédentes obs apparaissent avec une mag. normale mais datent de ~16h.Si vous avez la possibilité c'est le bon moment pour vérifier (chez moi c'est ☁️☁️☁️).<a href="https://mamot.fr/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> <a href="https://mamot.fr/tags/nova" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#nova</a> <a href="https://mamot.fr/tags/astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomie</a> <a href="https://mamot.fr/tags/astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrodon</a>

ℵ₀ 🏳️‍⚧️🏴‍☠️<a href="https://theskylive.com/sky/stars/hr-5958-star" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://theskylive.com/sky/stars/hr-5958-star</a>Waiting for the Next Outburst“Monitor the most recent measurements of <a href="https://mastodon.social/tags/TCoronaeBorealis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCoronaeBorealis</a> visual magnitude:Magnitude 11.578 ± 0.007<a href="https://mastodon.social/tags/blazestar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#blazestar</a> <a href="https://mastodon.social/tags/CoronaBorealis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CoronaBorealis</a> <a href="https://mastodon.social/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> <a href="https://mastodon.social/tags/nova" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#nova</a> <a href="https://mastodon.social/tags/binarystars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#binarystars</a> <a href="https://mastodon.social/tags/redgiant" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#redgiant</a> <a href="https://mastodon.social/tags/whitedwarf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#whitedwarf</a> <a href="https://mastodon.social/tags/HD143454" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#HD143454</a> <a href="https://mastodon.social/tags/SAO84129" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SAO84129</a>

PoisayaWhat to Do During the Eruption of T CrBThe next predicted eruption of T Corona Borealis (T CrB) is believed to be imminent. When the Blaze Star explodes, it will pay to be prepared.AAVSO is here to help: <a href="https://www.aavso.org/blog/what-do-during-eruption-t-crb" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.aavso.org/blog/what-do-during-eruption-t-crb</a><a href="https://mastodon.online/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a>

Church of Jeff<a href="https://starwalk.space/en/news/t-coronae-borealis-nova-star-exploding" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://starwalk.space/en/news/t-coronae-borealis-nova-star-exploding</a> <a href="https://mastodon.world/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://mastodon.world/tags/nova" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#nova</a> <a href="https://mastodon.world/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> <a href="https://mastodon.world/tags/comingsoon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#comingsoon</a>

Church of Jeff<a href="https://www.nasa.gov/centers-and-facilities/marshall/nasa-global-astronomers-await-rare-nova-explosion/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.nasa.gov/centers-and-facilities/marshall/nasa-global-astronomers-await-rare-nova-explosion/</a> <a href="https://mastodon.world/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://mastodon.world/tags/nova" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#nova</a> <a href="https://mastodon.world/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> <a href="https://mastodon.world/tags/comingsoon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#comingsoon</a>

scinexx - das wissensmagazinDossier der Woche: Ein „neuer Stern“ am Himmel. In den nächsten Tagen oder Wochen wird am Himmel eine Nova aufleuchten – die Explosion eines Weißen Zwergs im Sternbild „Nördliche Krone“. <a href="https://nrw.social/tags/Nova" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Nova</a> <a href="https://nrw.social/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> <a href="https://nrw.social/tags/CoronaBorealis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CoronaBorealis</a> <a href="https://nrw.social/tags/Sternexplosion" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Sternexplosion</a> <a href="https://nrw.social/tags/Wei%C3%9FerZwerg" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#WeißerZwerg</a> <a href="https://nrw.social/tags/Astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomie</a> <a href="https://www.scinexx.de/dossier/ein-neuer-stern-am-himmel/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.scinexx.de/dossier/ein-neuer-stern-am-himmel/</a>

schmuckeremitVor etwa 3.000 Jahren entzündete sich der Wasserstoff eines Weißen Zwergs von der Masse unserer Sonne (T Coronae Borealis) der einen Roten Riesen umkreist.Das Licht dieses Ereignisses erwartet uns irgendwann ab jetzt bis Ende des Jahres und wird mit bloßem Auge für etwa 1-3 Nächten als heller Punkt am Nachthimmel zu sehen sein.Wissenschaft ist toll. <a href="https://mastodon.social/tags/nova" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#nova</a> <a href="https://mastodon.social/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a><a href="https://www.nasa.gov/centers-and-facilities/marshall/nasa-global-astronomers-await-rare-nova-explosion/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.nasa.gov/centers-and-facilities/marshall/nasa-global-astronomers-await-rare-nova-explosion/</a>

Jorma Ryske<a href="https://scicomm.xyz/@cosmos4u" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@cosmos4u</a> Referring to the paper seems that researchers see <a href="https://astrodon.social/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> flickering more like a normal variation causing deviations when analyzing <a href="https://astrodon.social/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> light curves. Perhaps some findings can be found afterwards. Anyway, it's interesting to amateur to follow <a href="https://astrodon.social/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> flickering activity during ongoing pre-eruption stage and then after primary eruption during secondary- and post-eruption states. Here enclosed is a fresh graph of my last night observations, several flicker activities is again visible.

Jorma Ryske<a href="https://scicomm.xyz/@cosmos4u" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@cosmos4u</a> I have observed <a href="https://astrodon.social/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> around 30 nights during June&July each about 4 hours period with 22 second resolution. However, although there has been some possible findings of trends in my observations I have not actually analyzed those. There are many research papers of these Cataclysmic Variables (CVs) published, and seems that in <a href="https://astrodon.social/tags/TCrB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCrB</a> there are brightness flickering even inside 1 minute. I have reported my observations to <a href="https://astrodon.social/tags/AAVSO" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AAVSO</a> database, which researchers are using actively.

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